Method and apparatus for producing footwear

Abstract

In a method for producing footwear, wherein the shaft and the shell sole of the footwear are glued together, the leather upper part of the footwear is first cut to size without the formation of a lasting fold, it is prepared and then roughened along a lower border thereof. After shaping of the tip, so as to conform to the last, the preformed shaft is stretched to measure, and a rear cap is simultaneously molded in. The shell sole, which is likewise glued, is placed on a glued border and pressed against at least the tip and heel and is also possibly sewn with a seam, after which a cover sole is placed and the shoe or footwear is completed.

What is claimed is: 
     
       1. In a method for producing footwear, wherein a leather upper of said footwear devoid of a lasting fold is first cut to size, prepared, sewed to form a shaft and provided with a front cap and a rear cap, said method including the steps of roughening a lower border of said shaft, providing a shell sole and roughening a border of said shell sole, applying adhesive to parts of said shaft and said shell sole to be glued together, placing said shell sole on said shaft and pressing said shell sole at least against the tip and the heel thereof and forming final finishing operations for said footwear to give to said footwear the form of a last, the improvements comprising that after said shaft is sewed only said tip is definitively formed so as to conform to said last, that said shaft is then placed on a last-like two-piece tensioning apparatus, is fixed with contact pressure molds and is axially stretched to size, that said rear cap is simultaneously definitively formed and that said shell sole is glued to the stretched shaft. 
     
     
       2. A method according to claim 1, further comprising the step of additionally sewing said shaft and said shell sole together. 
     
     
       3. A method according to claim 1, wherein after gluing said shaft and said shell sole, said footwear is steamed with overpressure, said footwear being then lasted, dried with the last being then removed. 
     
     
       4. A method according to claim 3, wherein a cover sole is placed in and is glued to said shell sole. 
     
     
       5. Apparatus for producing footwear, wherein said footwear is formed to include a leather upper part without a lasting fold comprising a shaft of said footwear and a sole, said apparatus comprising two partial molds which correspond with a last in contour and upon which said shaft is placed after having formed thereon a tip, a tip contact pressure mold which secures said shaft in the area of said tip but which leaves free a roughened and adhesive containing border of said shaft, a heel contact pressure mold which presses a rear cap of said footwear but which leaves free said border of said shaft, said partial molds and said respective contact pressure molds being adjustable relative to one another in the longitudinal direction of said sole and additional contact pressure molds for pressing against a shell sole border, at least one of said partial molds and said contact pressure molds being heatable. 
     
     
       6. Apparatus according to claim 5, wherein said partial molds and said contact pressure molds are pneumatically driven. 
     
     
       7. A method according to claim 1, wherein a cover sole is placed in and is glued to said shell sole.